LanceSR20

well i was just in the garage messin around late at night.. and started comparing some waterpumps, and though it would make for a good discussion. but anyways here were my findings...

here is a Roller Rocker sr20 water pump...


this is a 2.0 VE water pump...


here is a UK SR20 water pump.
this is where it gets interesting... and this is a factory oem water pump.


this is a SR16VE water pump.. looks like a 2.0.... but its not...


here is a side shot of the sr20 RR and the SR20ve water pump.


now here is the side shot of the SR16VE water pump... the blades are shorter in depth...


here is the SR16 and the SR20ve next together.


and for those who didnt know... the SR16 comes with a metal gasket instead of the silicone that all other sr20's have.


now all i can come up with is that the sr16ve water pump moves less water at lower rpm's than the 2.0's do. but in higher rpm moves the same at a higher rpm as the 2.0 does at 7500 rpm. i guess it all rounds out to be the same...but why in the hell does the UK have more blades than the standard DE or VE has, and whats with them being a straight design, versus the curved blades. The UK being the same block... shouldnt have the same cooling capacity as all other SR20's? or is an England thing?

so what you guys think?

__________________
THE VE-T IS ALIVE.
-92 sentra vvl-t 470whp...385tq. 24lbs.
-98 sentra SE/ sr2ve powered.
-2005 c230 kompressor.
-2006 Lancer Evolution 9 MR.
http://images.cardomain.com/member_i...66_28_full.jpg

your local asshole.

 

SE-Rican

Talk about having a bunch of parts lying around. LOL!

__________________
-Rob-
Get ready for a big SE-Rprise

Rob

someone bites their nails! lol

__________________
2K2 SE 6 speed Grey Lustre SE Every option minus navi, black leather, HLSD, Hotshot headers, Cattman Catback, Frankencar WAI, HP autoworks STS, ES motor mount inserts, ES shifter bushings, FSTB, RSB. JIC FLA-1 coilovers, A34 Brakes Hawk HPS pads, 18” Voxx wheels, Toyo 4s, 54,000 original owner miles.

DEAD SE-RIOUS

from the looks of it....the 20v and the de rr are the same part

__________________
SR20DEEP N.Y.C.
LOCK IT UP!

LanceSR20

yeah they seen to be the same. too bad i dont have a 91-94 water pump.. but i think it would be the same as the RR.

DEAD SE-RIOUS

well good to know if the wp fail....can go str8 to the dealer

Ivanx

I recently replaced the WP on my 93 NX2K it looked just like the UK pump. I can seen why this type could cause cavitation at high RMP.

__________________
93 NX2K

STRATTON

exactly what i was thinking, i can also see why it would cause cavitation. fin to fin being so close at high rpm i would imagine i would creat quite a vaccum (right word ? u know what im trying to say) at high rpm.

i wonder if there would be any way to alter the fins to increase the effeciency of the water pump.

im glad u posted this lance, now the next time i change my water pump ill be sure i dont buy the "apocolipse pump" (its late ;/ ).

stratton.

__________________
im back.......

XxToKeSxX

The conventional DE and Roller Rocker DE Water Pumps are the same... at least the lowports... I've compared them and found no dif...

There's my 2 cents!

__________________
1998 200sx SE-R | SR20DE
1991 NX-TuRBO | SR20DET
1995 240sx BaSe | ____DET

Shift_Buy Broken & Build...

SR20Turbofreak

nevermind

coryb13ser

soo, after all this what would we say is the best water pump...

__________________
12sec NA

SE-Rican

I have one here at home. I will bring it by today.

LanceSR20

well the best being to me is the 2.0 ve and the RR water pump. but i havent seen the 20v water pump yet, to know if it is better. the 20v is suppost to have more cooling capacity for the head is slightly different. it has larger water jackets that run through the head which keeps detonation in check. but i also think that the mezere electric water pump is far suppirior to all.

anomaly

why is the electric better?

Luis

More flow, and maximum flow all the time (not rpm dependent).

anomaly

thank you.